Reply to thread

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Message: <blockquote data-quote="turbotodd" data-source="post: 402757" data-attributes="member: 7376">Max RPM on that motor is 5500.  It is a torquey engine, I like them a little better than the 395cc version, but they don't idle NEAR as well as the later/smaller 395cc engines (which are twin carburetor).Try a 9" prop.  Should be close.  10" would be a happy medium between good holeshot and good top end, but would lean more toward top end speed.  With the 10" you should see in the neighborhood of 23-24 mph.  9" and expect 20-22-ish.  And you need a tach to make educated guesses in reference to props selection.</blockquote>